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- Thu May 08, 2008 1:23 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: The Dark Tower; density? (APOD 08 May 2008)
- Replies: 17
- Views: 6548
Density of the Dark Tower?
My students want to get an idea of the density of the Dark Tower and other features like reflection and emmision nebulae.